Light base for a dental chair

ABSTRACT

A light base has a base plate covered and pressed against the floor by a base of a dental chair, and a post-like upright assembly mounted on a mounting plate supports a lamp. The base plate is annular in shape and has a triangular portion projecting out from the base of the chair. A triangular plate having a surface in abutting relationship with the chair base is positioned in face-to-face engagement with the base plate projection.

United States Patent [191 Austin, Jr.

[4 1 Oct. 9, 1973 1 LIGHT BASE FOR A DENTAL CHAIR [76] Inventor: GeorgeK. Austin, Jr., 604 Holly Dr., Newberg, Oreg. 97132 [22] Filed: Mar. 17,1972 21 Appl. No.: 235,522

Related US. Application Data [63] Continuation of Ser. No. 869,089, Oct.24, 1969,

abandoned.

[52] US. Cl 240/2 R, 32/22, 240/4, 240/41.l5, 240/81 R, 248/188.1 [51]Int. Cl. F21v 33/00 [58] Field of Search 240/4l.15, 4, 2,

240/2 BB, 2 SL, 81, 2 M, 1.4; 128/376, 377, 396, 172.1, 191; 248/12,205, 188.1; 32/22 [56] References Cited UNITED STATES PATENTS 3,356,84112/1967 Horan 240/81 R 2,280,402 4/1942 Greppin 1,930,993 10/1933Blodgett 240/4 X 3,016,223 1/1962 I-loag et a1. 248/l88.l 3,191,0236/1965 Sullivan et a1. 240/4l.l 3,403,677 10/1968 Struve 128/205 FOREIGNPATENTS OR APPLICATIONS 988,069 4/1951 France 128/191 A PrimaryExaminer-Samuel S. Matthews Assistant Examiner-E. M. BeroAttorney-Stephen W. Blore et a1.

[5 7 ABSTRACT A light base has a base plate covered and pressed againstthe floor by a base of a dental chair, and a post-like upright assemblymounted on a mounting plate supports a lamp. The base plate is annularin shape and has a triangular portion projecting out from the base ofthe chair. A triangular plate having a surface in abutting relationshipwith the chair base is positioned in face-to-face engagement with thebase plate projection.

9 Claims, 2 Drawing Figures LIGIIT BASE FOR A DENTAL CHAIR This is acontinuation of'application Ser. No. 869,089 filed Oct. 24, 1969 nowabandoned.

DESCRIPTION This invention relates to a light base for a dental chair,and more particularly to a light base adapted to be held in place by andadjustable around a dental chair.

Anobject of the invention is to provide a light base for a dental chair.

Another object of the invention is to provide a light base adapted to beheld in place by and adjustable around a dental chair.

A further object of the invention is to provide a light base having anannular base plate adapted to be positioned under a movable dental chairbase and clamped against the floor by the weight of the chair and alsomovable with the chair over the floor and rotatably adjustable relativeto the chair.

The invention provides a light base having base plate means adapted tobe positioned under and held in place by a dental chair. The light basealso includes an upright assembly'mounted on a portion of the base platemeans extending outwardly from the chair.

In the drawings:

FIG. 1 is a perspective view of a light base for a dental chair formingone embodiment of the invention; and

FIG. 2 is a horizontal sectional view taken along line 2-2 of FIG. 1.

Referring now in detail to the drawings, there is shown therein a lightbase forming one embodiment of the invention and adapted to be used witha dental chair 12, which is of the movable or portable type which can beslid over the floor when desired and normally stays in place byfrictional engagement with the floor. The base 10 includes a planar baseplate 14 having an annular portion 16 and a generally triangular,radially projecting, mounting portion 18. A generally triangularmounting plate 20 is secured by screws 21 to the portion 18, and a bolt22 (FIG. 2) secures an upright assembly 24 to the mounting plate. Theannular portion is slightly smaller than a base 26 of the chair 12 andis positioned under the base 26 and is concentric with the base 26,which rests on the portion 16 to hold the lamp base in a fixed positionon the floor. However, the lamp base may be rotated, by deliberateaction only, on the floor relative to the chair base to adjust theposition of the upright assembly.

The upright assembly 24 includes an electrical outlet box 30, sockets32, a plug cord 34 and sulated conductors 35 extending into a tubularsocket 36 to which is rigidly secured a rigid tubular post 38. Thehousing of the box 30 is rigidly secured to the socket 36. A standarddental light 40 is mounted on a flanged adapter 42 which projects intothe top of the post and through which the conductors 35 extend. Thelight 40 has a tubular projection 51 which fits closely and slidably inthe adapter 42 with the bottom end of housing 53 resting on the flangeof the adapter. A plug of the cord of the light plugs into a socket atthe end of the conductors 35 to supply power to the light. Theconductors are sufficiently long for the socket to be pulled out theupper end of the post 38 for plugging and unplugging the light.

The above-described light base is especially designed for use withdental chairs which are movable and are used with mobile units, or whereinstallation of a ceiling or wall mounted light is not practical. Thelight base forms a rugged support while being very compact. The lightbase also is easily adjusted rotatively relative to the chair base whilenormally being held securely in place without the necessity of screws orbolts to fasten the light base to the floor.

What is claimed is:

I. In combination,

a dental chair having a base,

base plate means adapted to be inserted between the dental chair baseand a floor and be held thereby,

tubular upright means secured to the base plate means,

the base plate means including a flat, washer-like annular portionadapted to fit under the base of the dental chair, be coveredsubstantially completely thereby and be clamped thereby against thefloor,

the base plate means also including a radial projection extending beyondthe base of the dental chair and having a tubular socket mounting theupright means in a position spaced laterally from the dental chairwherein the base plate means includes a base plate having an annularportion and a generally triangular radial projection, the base platemeans also including a generally triangular mounting plate secured inface-to-face engagement with the projection and having an inner curvedend portion in arcuate abutting relationship with the adjacent portionof the dental chair base,

and dental light means mounted on the upright means.

2. The combination of claim 1 wherein the upright means comprises atubular post secured to the mounting plate.

3. The combination of claim 2 wherein the upright means also includes anelectrical housing box having a connector cord, sockets and conductormeans extending into and along the tubular post.

4. The combination of claim 2 wherein the upright means includes anadapter plug fitting into-the upper end portion of the post,

and a dental light mounted on the adapter plug.

5. The combination of claim 1 wherein the upright means and the baseplate means define a rigid L-shaped assembly.

6. The combination of claim 5 wherein said annular portion fits underand is concentric with the base of the dental chair and pressed therebyagainst the floor.

7. In combination,

a dental chair having a base,

a base plate having a flat, washer-like annular portion adapted to fitbetween the dental chair base and a floor and be held thereby and alsoprovided with a radial projection, I

an upright tubular pole,

bracket means securing the pole to the projection, wherein the baseplate means includes a base plate having an annular portion and agenerally triangular radial projection, the base plate means alsoincluding a generally triangular mounting plate secured in face-to-faceengagement with the projection and having an inner curved end portion inarcuate abutting relationship with the adjacent portion of the dentalchair base,

dental light means mounted on the pole,

portion of the plate is completely covered by the chair.

9. The combination of claim 7 wherein the bracket means includes a platemember fixed on the projection and a tubular socket fixed to the platemember for mounting said pole.

I! I III i

1. In combination, a dental chair having a base, base plate meansadapted to be inserted between the dental chair base and a floor and beheld thereby, tubular upright means secured to the base plate means, thebase plate means including a flat, washer-like annular portion adaptedto fit under the base of the dental chair, be covered substantiallycompletely thereby and be clamped thereby against the floor, the baseplate means also including a radial projection extending beyond the baseof the dental chair and having a tubular socket mounting the uprightmeans in a position spaced laterally from the dental chair wherein thebase plate means includes a base plate having an annular portion and agenerally triangular radial projection, the base plate means alsoincluding a generally triangular mounting plate secured in face-to-faceengagement with the projection and having an inner curved end portion inarcuate abutting relationship with the adjacent portion of the dentalchair base, and dental light means mounted on the upright means.
 2. Thecombination of claim 1 wherein the upright means comprises a tubularpost secured to the mounting plate.
 3. The combination of claim 2wherein the upright means also includes an electrical housing box havinga connector cord, sockets and conductor means extending into and alongthe tubular post.
 4. The combination of claim 2 wherein the uprightmeans includes an adapter plug fitting into the upper end portion of thepost, and a dental light mounted on the adapter plug.
 5. The combinationof claim 1 wherein the upright means and the base plate means define arigid L-shaped assembly.
 6. The combination of claim 5 wherein saidannular portion fits under and is concentric with the base of the dentalchair and pressed thereby against the floor.
 7. In combination, a dentalchair having a base, a base plate having a flat, washer-like annularportion adapted to fit between the dental chair base and a floor and beheld thereby and also provided with a radial projection, an uprighttubular pole, bracket means securing the pole to the projection, whereinthe base plate means includes a base plate having an annular portion anda generally triangular radial projection, the base plate means alsoincluding a generally triangular mounting plate secured in face-to-faceengagement with the projection and having an inner curved end portion inarcuate abutting relationship with the adjacent portion of the dentalchair base, dental light means mounted on the pole, an electrical outletbox in a fixed position at the base of the pole, a plug cord extendingfrom the outlet box, and conductor means extending through the tube tothe dental light means.
 8. The combination of claim 7 wherein theannular portion of the plate is completely covered by the chair.
 9. Thecombination of claim 7 wherein the bracket means includes a plate memberfixed on the projection and a tubular socket fixed to the plate memberfor mounting said pole.